Everything About ___
Live briefing

Everything about Spectroradiometer

Light measurement tool

A spectroradiometer is a light measurement tool that is able to measure both the wavelength and amplitude of the light emitted from a light source. Spectrometers discriminate the wavelength based on the position the light hits at the detector array allowing the full spectrum to be obtained with a single acquisition. Most spectrometers have a base measurement of counts which is the un-calibrated reading and is thus impacted by the sensitivity of the detector to each wavelength. By applying a calibration, the spectrometer is then able to provide measurements of spectral irradiance, spectral radiance and/or spectral flux. This data is also then used with built in or PC software and numerous algorithms to provide readings or Irradiance (W/cm2), Illuminance, Radiance (W/sr), Luminance (cd), Flux, Chromaticity, Color Temperature, Peak and Dominant Wavelength. Some more complex spectrometer software packages also allow calculation of PAR μmol/m2/s, Metamerism, and candela calculations based on distance and include features like 2- and 20-degree observer, baseline overlay comparisons, transmission and reflectance. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: SpectroradiometerA 5-minute orientation
  2. Skim a recent paper: Optimal soil organic matter mapping using an ensemble model incorporating moderate resolution imaging spectroradiometer, portable X-ray fluorescence, and visible near-infrared dataInfluential work since 2022
  3. Pick up a classic book: Scientific and technical support for the Galileo net flux radiometer experimentThe most-reprinted book on the subject
  4. Read the landmark paper: Operational remote sensing of tropospheric aerosol over land from EOS moderate resolution imaging spectroradiometerCited 1,520 times
  5. Go sideways: Optical spectrometerA closely related topic
  6. Go sideways: Ultraviolet–visible spectroscopyA closely related topic

📖 Definitions

Noun A device that measures the spectral power distributions of illuminants, used to evaluate and categorize lighting or to calibrate display technology.

🗂️ The subject at a glance

  1. Background
  2. Spectral power distribution
  3. Sources of error
  4. Definitions
  5. How it works
  6. Applications
  7. DIY builds

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics